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Marshall tube amp problems

It is a marshall JCM 2000 DSL 401 all tube amp. I went to bed and left it on, the next night I went to use it I found it on and not working. The power amp tubes light up but the pre amp tubes do not. I havent replaced the tubes do you think they are the problem. Thanks, dhu1988

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I have new tubes in my EVH III amp. only two pre amp tubes light up. The on light comes on, but no others come on. What up with that? Dan.

Posted on Aug 20, 2009

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My vofanhag zx5001 wont go off protection mode as soon as the speacker turns on it turns on to it is it a bad ground ?

Posted on Feb 25, 2008

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There is a bridge rectifier and red and black wires jumping from preamp tube to preamp tube. These need to be resoldered, take it to your favorite pro audio service center. I'm doing this to the same amp right this minute! Send it to me, I'll fix it. Tom Peary Norman's Electronics Atlanta, Ga 770 451 5057 www.neiusa.com

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Posted on May 02, 2007

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After a gig last night we tried our Marshall JCM 2000 DSL401and it had developed two noises without anything plugged in. The first is a transformer hum that I'd never noticed before and when standby is...
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82 WTS LITHIUM BATTERY, 3 LED POWER INDICATOR => Model IDX-E80S Car Audio Amplifier

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